Navajo Code Talkers

Navajo Code Talkers

The code that was never broken

Source: Department of the Navy

President George W. Bush honored Navajo Code Talkers in July 2001.

Guadalcanal, Tarawa, Peleliu, Iwo Jima: the Navajo code talkers took part in every assault the U.S. Marines conducted in the Pacific from 1942 to 1945. They served in all Marine divisions, transmitting messages by telephone and radio in their native language—a code that the Japanese never broke.

Why Navajo?

The idea to use Navajo for secure communications came from Philip Johnston, the son of a missionary to the Navajos and one of the few non-Navajos who spoke their language fluently. Johnston, reared on the Navajo reservation, was a World War I veteran who knew of the military's search for a code that would withstand all attempts to decipher it. He also knew that Native American languages—notably Choctaw—had been used in World War I to encode messages.

Johnston believed Navajo answered the military requirement for an undecipherable code because Navajo is an unwritten language of extreme complexity. Its syntax and tonal qualities, not to mention dialects, make it unintelligible to anyone without extensive exposure and training. It has no alphabet or symbols, and is spoken only on the Navajo lands of the American Southwest.

Creating a Code

Early in 1942, Johnston met with Major General Clayton B. Vogel, the commanding general of Amphibious Corps, Pacific Fleet, and his staff to convince them of the Navajo language's value as code. Johnston staged tests under simulated combat conditions, demonstrating that Navajos could encode, transmit, and decode a three-line English message in 20 seconds. Convinced, Vogel recommended to the commandant of the Marine Corps that the Marines recruit 200 Navajos.

In 1942, there were about 50,000 Navajo tribe members. As of 1945, about 540 Navajos served as Marines. From 375 to 420 of those trained as code talkers; the rest served in other capacities.

In May 1942, the first 29 Navajo recruits attended boot camp. Then, at Camp Pendleton, Oceanside, California, this first group created the Navajo code. They developed a dictionary and numerous words for military terms. The dictionary and all code words had to be memorized during training. Once a Navajo code talker completed his training, he was sent to a Marine unit deployed in the Pacific theater.

The Navajo Code Talker's Dictionary

When a Navajo code talker received a message, what he heard was a string of seemingly unrelated Navajo words. The code talker first had to translate each Navajo word into its English equivalent. Then he used only the first letter of the English equivalent in spelling. Thus, the Navajo words "wol-la-chee" (ant), "be-la-sana" (apple) and "tse-nill" (axe) all stood for the letter "a." One way to say the word "Navy" in Navajo code would be "tsah (needle) wol-la-chee (ant) ah-keh-di-glini (victor) tsah-ah-dzoh (yucca)."

Not all words had to be spelled out letter by letter. The developers of the original code assigned Navajo words to represent about 450 frequently used military terms that did not exist in the Navajo language. Several examples: "besh-lo" (iron fish) meant "submarine," "dah-he-tih-hi" (hummingbird) meant "fighter plane" and "debeh-li-zine" (black street) meant "squad."

Praise for their skill, speed and accuracy accrued throughout the war. At Iwo Jima, Major Howard Connor, 5th Marine Division signal officer, declared, "Were it not for the Navajos, the Marines would never have taken Iwo Jima." Connor had six Navajo code talkers working around the clock during the first two days of the battle. Those six sent and received more than 800 messages, all without error.

The Japanese, who were skilled code breakers, remained baffled by the Navajo language. The Japanese chief of intelligence, Lieutenant General Seizo Arisue, said that while they were able to decipher the codes used by the U.S. Army and Army Air Corps, they never cracked the code used by the Marines.

Department of Defense Honors Navajo Veterans

Long unrecognized because of the continued value of their language as a security classified code, the Navajo code talkers of World War II were honored for their contributions to defense on Sept. 17, 1992, at the Pentagon, Washington, D.C.

Thirty-five code talkers, all veterans of the U.S. Marine Corps, attended the dedication of the Navajo code talker exhibit. The exhibit includes a display of photographs, equipment and the original code, along with an explanation of how the code worked.